标签:null from ota rom tst puts toc use copy
这是一个简单的对poi的封装,只能简单的取值,设值,拷贝行,插入行等。
针对读取Excel模板后,填值再保存的应用,比较方便。
poi版本:3.13
贴代码:
package cn.com.gtmc.glaf2.util; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.text.SimpleDateFormat; import java.util.Date; import java.util.HashMap; import java.util.Map; import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.CellStyle; import org.apache.poi.ss.usermodel.DataFormat; import org.apache.poi.ss.usermodel.DateUtil; import org.apache.poi.ss.usermodel.FormulaEvaluator; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.xssf.usermodel.XSSFFormulaEvaluator; import org.apache.poi.xssf.usermodel.XSSFWorkbook; public class ExcelUtil { private Workbook workbook; private InputStream inputStream; private int activeSheetIndex = 0; private FormulaEvaluator formulaEvaluator; // 日期的格式化字符串 private String datePattern = "yyyy/MM/dd"; public void setDatePattern(String datePattern) { this.datePattern = datePattern; } private Map<String, CellStyle> mapCellStyle = new HashMap<>(); /** * 取得cell的格式化样式 * * @param format * 这个format是Excel单元格支持的格式字符串 例如: 整数:#,##0 浮点数:#,##0.00 日期:yyyy/mm/dd * yyyy"年"m"月"d"日" * @return CellStyle */ private CellStyle getFormatCellStyle(String format) { if (!mapCellStyle.containsKey(format)) { CellStyle style = this.workbook.createCellStyle(); DataFormat df = this.workbook.createDataFormat(); style.setDataFormat(df.getFormat(format)); mapCellStyle.put(format, style); } return mapCellStyle.get(format); } // 序号从0开始 /** * @param file * excel文件的路径 * @throws Exception */ public ExcelUtil(File file) throws Exception { String fileName = file.getName(); String prefix = fileName.substring(fileName.lastIndexOf(‘.‘) + 1); inputStream = new FileInputStream(file); Throwable localThrowable3 = null; try { if ("xls".equals(prefix)) { workbook = new HSSFWorkbook(inputStream); formulaEvaluator = new HSSFFormulaEvaluator((HSSFWorkbook) workbook); } else if ("xlsx".equals(prefix)) { workbook = new XSSFWorkbook(inputStream); formulaEvaluator = new XSSFFormulaEvaluator((XSSFWorkbook) workbook); } } catch (Throwable localThrowable1) { localThrowable3 = localThrowable1; throw localThrowable1; } finally { if (inputStream != null) { if (localThrowable3 != null) { try { inputStream.close(); } catch (Throwable localThrowable2) { localThrowable3.addSuppressed(localThrowable2); } } else { inputStream.close(); } } } if (workbook == null) { throw new RuntimeException("input file error"); } } /** * 保存excel到指定文件 * * @throws IOException */ public void save(File file) throws IOException { FileOutputStream fs = new FileOutputStream(file); workbook.write(fs); } /** * 关闭excel * * @throws IOException */ public void close() throws IOException { if (inputStream != null) { inputStream.close(); } workbook.close(); } /** * 指定 当前活动的Sheet (默认是0) * * @param sheetIndex * Sheet 页,从 0 开始 */ public void setActiveSheet(int sheetIndex) { this.activeSheetIndex = sheetIndex; this.workbook.setActiveSheet(sheetIndex); } /** * 设定Sheet名 * * @param sheetIndex * Sheet 页,从 0 开始 * @param sheetName * Sheet名 */ public void setSheetName(int sheetIndex, String sheetName) { this.workbook.setSheetName(sheetIndex, sheetName); } /** * * 设置 cell 位置的单元格值 * * @param cell * 单元格的位置,如:A1,B2 * @param value * 值 */ public void setValueAt(String cell, Object value) { CellAddress address = new CellAddress(cell); setValueAt(address.getRow(), address.getCol(), value); } /** * * 设置row 和 column 位置的单元格值 * * @param rowIndex * 指定行,从0开始 * @param colIndex * 指定列,从0开始 * @param value * 值 */ public void setValueAt(int rowIndex, int colIndex, Object value) { Sheet sheet = workbook.getSheetAt(this.activeSheetIndex); Cell cell = getOrCreateCell(sheet, rowIndex, colIndex); if (value == null) { cell.setCellValue(""); } else { if (value instanceof Integer) { cell.setCellStyle(this.getFormatCellStyle("#,##0")); cell.setCellValue((Integer) value); } else if (value instanceof Long) { cell.setCellStyle(this.getFormatCellStyle("#,##0")); cell.setCellValue((Long) value); } else if (value instanceof Float) { cell.setCellStyle(this.getFormatCellStyle("#,##0.00")); cell.setCellValue((Float) value); } else if (value instanceof Double) { cell.setCellStyle(this.getFormatCellStyle("#,##0.00")); cell.setCellValue((Double) value); } else if (value instanceof Boolean) { cell.setCellValue((Boolean) value); } else if (value instanceof Date) { cell.setCellStyle(this.getFormatCellStyle("yyyy/mm/dd")); cell.setCellValue((Date) value); } else { // 其他的,直接输出为字符串 cell.setCellValue(value.toString()); } } } /** * 设定指定单元格的公式 * * @param cell * @param formula */ public void setFormulaAt(String cell, String formula) { CellAddress address = new CellAddress(cell); setFormulaAt(address.getRow(), address.getCol(), formula); } /** * 设定指定单元格的公式 * * @param rowIndex * @param colIndex * @param formula */ public void setFormulaAt(int rowIndex, int colIndex, String formula) { Sheet sheet = workbook.getSheetAt(this.activeSheetIndex); Cell cell = getOrCreateCell(sheet, rowIndex, colIndex); cell.setCellType(Cell.CELL_TYPE_FORMULA); cell.setCellFormula(formula); } /** * 取得指定位置的Cell(没有就创建新的Cell) * * @param sheet * @param rowIndex * @param colIndex * @return */ private Cell getOrCreateCell(Sheet sheet, int rowIndex, int colIndex) { Row row = sheet.getRow(rowIndex); if (row == null) { row = sheet.createRow(rowIndex); } Cell cell = row.getCell(colIndex); if (cell == null) { cell = row.createCell(colIndex); } return cell; } /** * * 返回 cell 位置的单元格值(String类型) * * @param cell * 单元格的位置,如:A1,B2 * @return * */ public String getValueAt(String cell) { if (cell == null || "".equals(cell)) { return ""; } CellAddress address = new CellAddress(cell); return this.getValueAt(address.getRow(), address.getCol()); } /** * * 返回 row 和 column 位置的单元格值 * * @param rowIndex * 指定行,从0开始 * @param colIndex * 指定列,从0开始 * @return * */ public String getValueAt(int rowIndex, int colIndex) { Sheet sheet = workbook.getSheetAt(this.activeSheetIndex); Row row = sheet.getRow(rowIndex); if (row != null) { return getCellValueToString(row.getCell(colIndex)); } return ""; } /** * * 转换单元格的类型为String 默认的 <br> * 默认的数据类型:CELL_TYPE_BLANK(3), CELL_TYPE_BOOLEAN(4), * CELL_TYPE_ERROR(5),CELL_TYPE_FORMULA(2), CELL_TYPE_NUMERIC(0), * CELL_TYPE_STRING(1) * * @param cell * @return * */ private String getCellValueToString(Cell cell) { String strCell = ""; if (cell == null) { return null; } switch (cell.getCellType()) { case Cell.CELL_TYPE_BOOLEAN: strCell = String.valueOf(cell.getBooleanCellValue()); break; case Cell.CELL_TYPE_NUMERIC: if (DateUtil.isCellDateFormatted(cell)) { SimpleDateFormat sdf = new SimpleDateFormat(datePattern); strCell = sdf.format(cell.getDateCellValue()); } else { strCell = String.valueOf(cell.getNumericCellValue()); } break; case Cell.CELL_TYPE_STRING: strCell = cell.getStringCellValue(); break; case Cell.CELL_TYPE_FORMULA: strCell = String.valueOf(formulaEvaluator.evaluate(cell).getNumberValue()); break; default: break; } return strCell; } /** * 获取当前操作的excel的workbook * 注意: * 一般的简单操作都可以通过ExcelUtil来完成。 * 一些复杂的特殊的要求,ExcelUtil暂时没有提供,故开放workbook接口, * 由外部调用来自己操作poi完成。 * @return Workbook */ public Workbook getWorkbook() { return this.workbook; } private void insertRow(int starRow, int rows) { Sheet sheet = this.workbook.getSheetAt(this.activeSheetIndex); sheet.shiftRows(starRow + 1, sheet.getLastRowNum(), rows, true, false); // Parameters: // startRow - the row to start shifting // endRow - the row to end shifting // n - the number of rows to shift // copyRowHeight - whether to copy the row height during the shift // resetOriginalRowHeight - whether to set the original row‘s height to the // default } /** * 拷贝行,并将拷贝的行插入到拷贝行的下面 * * @param startRow * 拷贝开始行 从0开始 * @param endRow * 拷贝结束行 从0开始 */ public void copyAndInsertRows(int startRow, int endRow) { int rowCount = endRow - startRow + 1; this.insertRow(endRow, rowCount); this.copyRows(startRow, endRow, startRow + rowCount); } /** * 拷贝行,并将拷贝的行粘贴到指定的位置 * * @param startRow * 开始行 从0开始 * @param endRow * 结束行 从0开始 * @param pPosition * 粘贴目标行的起始位置 从0开始 */ public void copyRows(int startRow, int endRow, int pPosition) { Sheet sheet = this.workbook.getSheetAt(this.activeSheetIndex); int pStartRow = startRow; int pEndRow = endRow; int targetRowFrom; int targetRowTo; int columnCount; CellRangeAddress region = null; int i; int j; if (pStartRow == -1 || pEndRow == -1) { return; } // 拷贝合并的单元格 for (i = 0; i < sheet.getNumMergedRegions(); i++) { region = sheet.getMergedRegion(i); if ((region.getFirstRow() >= pStartRow) && (region.getLastRow() <= pEndRow)) { targetRowFrom = region.getFirstRow() - pStartRow + pPosition; targetRowTo = region.getLastRow() - pStartRow + pPosition; CellRangeAddress newRegion = region.copy(); newRegion.setFirstRow(targetRowFrom); newRegion.setFirstColumn(region.getFirstColumn()); newRegion.setLastRow(targetRowTo); newRegion.setLastColumn(region.getLastColumn()); sheet.addMergedRegion(newRegion); } } // 设置列宽 for (i = pStartRow; i <= pEndRow; i++) { Row sourceRow = sheet.getRow(i); columnCount = sourceRow.getLastCellNum(); if (sourceRow != null) { Row newRow = sheet.createRow(pPosition - pStartRow + i); newRow.setHeight(sourceRow.getHeight()); for (j = 0; j < columnCount; j++) { Cell templateCell = sourceRow.getCell(j); if (templateCell != null) { Cell newCell = newRow.createCell(j); copyCell(templateCell, newCell); } } } } } private void copyCell(Cell srcCell, Cell distCell) { distCell.setCellStyle(srcCell.getCellStyle()); if (srcCell.getCellComment() != null) { distCell.setCellComment(srcCell.getCellComment()); } int srcCellType = srcCell.getCellType(); distCell.setCellType(srcCellType); if (srcCellType == Cell.CELL_TYPE_NUMERIC) { if (DateUtil.isCellDateFormatted(srcCell)) { distCell.setCellValue(srcCell.getDateCellValue()); } else { distCell.setCellValue(srcCell.getNumericCellValue()); } } else if (srcCellType == Cell.CELL_TYPE_STRING) { distCell.setCellValue(srcCell.getRichStringCellValue()); } else if (srcCellType == Cell.CELL_TYPE_BLANK) { // nothing21 } else if (srcCellType == Cell.CELL_TYPE_BOOLEAN) { distCell.setCellValue(srcCell.getBooleanCellValue()); } else if (srcCellType == Cell.CELL_TYPE_ERROR) { distCell.setCellErrorValue(srcCell.getErrorCellValue()); } else if (srcCellType == Cell.CELL_TYPE_FORMULA) { distCell.setCellFormula(srcCell.getCellFormula()); } else { // nothing29 } } /** * Common conversion functions between Excel style A1, C27 style cell * references, and POI usermodel style row=0, column=0 style references. eg "A1" * and "BA2" */ public static final class CellAddress { private int _rowIndex; private int _colIndex; /** * @param cellAddr * Excel style A1, C27 */ public CellAddress(String cellAddr) { String strColumn = ""; String strRow = ""; for (int i = 0; i < cellAddr.length(); i++) { char c = cellAddr.charAt(i); if (!Character.isDigit(c)) { strColumn += c; } else { strRow += c; } } this._rowIndex = Integer.parseInt(strRow) - 1; this._colIndex = convertColStringToIndex(strColumn); } /** * @param rowIndex * 0-based rowIndex * @param colIndex * 0-based colIndex */ public CellAddress(int rowIndex, int colIndex) { this._rowIndex = rowIndex; this._colIndex = colIndex; } /** * @return 0-based rowIndex */ public int getRow() { return this._rowIndex; } /** * @return 0-based colIndex */ public int getCol() { return this._colIndex; } /** * @return Excel style A1, C27 */ public String formatAsString() { StringBuffer sb = new StringBuffer(); sb.append(convertNumToColString(this._colIndex)); sb.append((this._rowIndex + 1)); return sb.toString(); } /** * Converts an Excel column name like "C" to a zero-based index. * * @param name * @return Index corresponding to the specified name */ private static int convertColStringToIndex(String name) { int column = 0; for (int i = 0; i < name.length(); ++i) { int c = name.charAt(i); column = (column * 26) + (c - ‘A‘ + 1); } return column - 1; } /** * Takes in a 0-based base-10 column and returns a ALPHA-26 representation. eg * column #3 -> D */ public static String convertNumToColString(int col) { // Excel counts column A as the 1st column, we // treat it as the 0th one int excelColNum = col + 1; StringBuilder colRef = new StringBuilder(2); int colRemain = excelColNum; while (colRemain > 0) { int thisPart = colRemain % 26; if (thisPart == 0) { thisPart = 26; } colRemain = (colRemain - thisPart) / 26; // The letter A is at 65 char colChar = (char) (thisPart + 64); colRef.insert(0, colChar); } return colRef.toString(); } } }
测试类:
package cn.com.gtmc.glaf2.util; import static org.junit.Assert.assertEquals; import java.io.File; import java.text.SimpleDateFormat; import java.util.Date; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.Row; import org.junit.Test; import org.springframework.test.annotation.Rollback; import org.springframework.transaction.annotation.Transactional; import cn.com.gtmc.glaf2.base.BaseTest; public class ExcelUtilTest extends BaseTest{ @Transactional @Test @Rollback(true) public void cellAddressTest(){ ExcelUtil.CellAddress cellAddress = new ExcelUtil.CellAddress("A1"); assertEquals(0, cellAddress.getRow()); cellAddress = new ExcelUtil.CellAddress("B2"); assertEquals(1, cellAddress.getRow()); assertEquals(1, cellAddress.getCol()); cellAddress = new ExcelUtil.CellAddress(2,6); assertEquals("G3", cellAddress.formatAsString()); } @Transactional @Test @Rollback(true) public void readTemplateTest(){ File file = new File("D:\\TEST\\template.xlsx"); ExcelUtil util = null ; try { util = new ExcelUtil(file); util.setActiveSheet(0); // 字符串 util.setValueAt("B5", "100.25"); util.setValueAt("B6", "正则表达式"); // 公式 util.setFormulaAt("B7", "SUM(A1:A2)"); // 各种数据类型 int a = 100; util.setValueAt("B8", a); long b = 2500000l; util.setValueAt("B9", b); float c = 100.2569f; util.setValueAt("B10", c); double d = 100.2569d; util.setValueAt("B11", d); boolean bb = true; util.setValueAt("B12", bb); util.setValueAt("B13", new Date()); SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss"); util.save(new File("D:\\TEST\\" + "Temp" + sdf.format(new Date()) + ".xlsx")); } catch (Exception e) { e.printStackTrace(); }finally{ if(util!=null) { try { util.close(); } catch (Exception e2) { e2.printStackTrace(); } } } } @Transactional @Test @Rollback(true) public void insertRowTest(){ File file = new File("D:\\TEST\\templateList.xlsx"); ExcelUtil util = null ; try { util = new ExcelUtil(file); util.setActiveSheet(0); //util.insertRow(4, 2); util.copyAndInsertRows(3, 4); SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss"); util.save(new File("D:\\TEST\\" + "Temp" + sdf.format(new Date()) + ".xlsx")); } catch (Exception e) { e.printStackTrace(); }finally{ if(util!=null) { try { util.close(); } catch (Exception e2) { e2.printStackTrace(); } } } } @Transactional @Test @Rollback(true) public void RowColNumberTest(){ File file = new File("D:\\TEST\\templateRowCell.xlsx"); ExcelUtil util = null ; try { util = new ExcelUtil(file); util.setActiveSheet(0); Sheet sheet = util.getWorkbook().getSheetAt(0); System.out.println("getLastRowNum:" + sheet.getLastRowNum()); System.out.println("getFirstRowNum:" + sheet.getFirstRowNum()); System.out.println("getLeftCol:" + sheet.getLeftCol()); System.out.println("getTopRow:" + sheet.getTopRow()); System.out.println("getPhysicalNumberOfRows:" + sheet.getPhysicalNumberOfRows()); Row row = sheet.getRow(1); System.out.println("getFirstCellNum:" + row.getFirstCellNum()); System.out.println("getLastCellNum:" + row.getLastCellNum()); System.out.println("getPhysicalNumberOfCells:" + row.getPhysicalNumberOfCells()); SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss"); util.save(new File("D:\\TEST\\" + "Temp" + sdf.format(new Date()) + ".xlsx")); } catch (Exception e) { e.printStackTrace(); }finally{ if(util!=null) { try { util.close(); } catch (Exception e2) { e2.printStackTrace(); } } } } }
标签:null from ota rom tst puts toc use copy
原文地址:https://www.cnblogs.com/xiashengwang/p/8890842.html